Having owned a few collectible muscle cars over the years - it’s not free money. You have to pick and choose very wisely. The ‘08 market crash smoked quite a few cars - especially the Mopar HEMI and Six-Pack cars.
I do not get the model. To profit from the appreciation over the years, you have to 'keep' the car in your collection. And you have to maintain it. If you buy a Testarossa for example and want to get the top dollar for it, it should be serviced like hell. And on that car alone, you are talking about every two, three years around $10 to $15k. So if you keep it for ten years, you are down the hole for about 50k to 75k, if nothing breaks. Besides that, they are made to drive, not to sit in the garage.
There are investors that “flip” collectible cars. You really have to know the cars and the market, though. For that matter you can flip collectible guitars, violins, art, all sorts of stuff. It helps to have quite a bit of cash on hand and a desperate seller for any of it. And you need to make sure what you’re buying is authentic - if it’s collectible it’s faked.
Been spending time on BAT (bringatrailer.com) which has many collectibles on auction. The chat room is filled with highly knowledgeable buyers and I'd suggest anyone looking into collectibles to spend time there and learn. Collectibles are an investment so, yes, they usually sit unused to keep their value up, and some cars appreciate much faster than others -a BMW Z8 can go upwards of 200k, for example. Like stamps, subtle differences will greatly affect value, not just mileage, such as transmission type, model year, original or refurbished, etc. Most importantly though, I think one has to love cars to get involved in this because there are much easier ways to make money (like trading) than investing in cars.
I remember back in 2009/2010 recession, classic Porsche 911's from the 1970s were relatively cheap - you could have bought a reasonable condition one for below $20k. This recession, not really - there seems to be less desperation to sell. Even the lowly 914's are selling for above $20k.
Thanks to Magnus the air cooled 911’s went bonks. Then you have Singer and Gunther Werks that use only the 993 platform to build their $500K-plus Boutique creations.
They need to be upfront with how they pass-through costs. How do we know these are real claims on the vehicle? Is Title held in a Trust? Surely, that wasn't an oversight. It is more than an ethical issue. Otherwise, they won't get real investors. Just car fans.